Purification device of baby carriage

ABSTRACT

A purification device of baby carriage is provided and includes a main body, a purification unit, a gas guider and a gas detection module. The purification unit, the gas guider and the gas detection module are disposed in the main body to guide the gas outside the main body through the purification unit for filtering and purifying the gas, and discharge a purified gas. The gas detection module detects particle concentration of suspended particles contained in the purified gas. The gas guider is controlled to operate and export a gas at an airflow rate within 3 minutes. The particle concentration of the suspended particles contained in the purified gas, which is filtered by the purification unit, is reduced to and less than 0.75 μg/m 3 . Consequently, the purified gas is filtered, and the baby inside the baby carriage can breathe with safety.

FIELD OF THE INVENTION

The present disclosure relates to a purification device, and more particularly to a purification device of a baby carriage implemented and applied in the baby carriage and combined with the baby carriage.

BACKGROUND OF THE INVENTION

In recent, people pay more and more attention to the quality of the air around their lives. For example, carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5, nitric oxide, sulfur monoxide and even the suspended particles contained in the air are exposed in the environment to affect the human health, and even endanger the life seriously. Special attention is require in the nasal passages of babies, which are narrow and more likely to accumulate particles contained in the air, and therefore the secretions in the nasal passages increase and cause the problem of nasal passages obstruction. Therefore, providing a purification solution for purifying and improving the air quality, preventing babies from breathing harmful gases in outdoor environment, and monitoring the air quality in real time anytime and anywhere, which is an issue of concern developed in the present disclosure.

SUMMARY OF THE INVENTION

An object of the present disclosure provides a purification device of a baby carriage. A gas detection module is utilized to monitor the air quality in the environment at any time, and a purification unit is utilized to provide a solution for purifying and improving the air quality. In this way, the gas detection module and the purification unit combined with a gas guider can export a gas at a specific airflow amount, so as to allow the purification unit to filter and obtain a purified gas. In addition, the gas guider constantly controls the exported airflow rate within 3 minutes to reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 μg/m³, so as to provide the purification effect by safe filtration. Moreover, the gas detection module is used to detect the breathing area around the nose, so as to ensure that the purified gas through safe filtration can be provided. When the particle concentration is too high, the real-time information is available for issuing warning notice to take preventive measures immediately and/or provide an isolation cover for protection, so as to take protective measures in the isolation cover.

In accordance with an aspect of the present disclosure, a purification device of a baby carriage applied in the baby carriage is provided and includes a main body, a purification unit, a gas guider and a gas detection module. The main body is mounted on the baby carriage and includes at least one inlet and at least one outlet. The purification unit is disposed in the main body for filtering a gas introduced into the main body through the at least one inlet. The gas guider is disposed in the main body and is adjacent to the at least one outlet. The gas outside the main body is inhaled and flows through the purification unit for filtering and purifying, so that a purified gas is filtered and is discharged out through the at least one outlet. The gas detection module is disposed in the main body for detecting a particle concentration of suspended particles contained in the purified gas filtered through the purification unit. The gas guider is constantly controlled to operate and export a gas at an airflow rate within 3 minutes to filter and reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 μg/m³, so as to provide the purified gas by safe filtration to a baby in the baby carriage for breathing

BRIEF DESCRIPTION OF THE DRAWINGS

The above contents of the present disclosure will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed description and accompanying drawings, in which:

FIG 1A is a schematic view illustrating a purification device of a baby carriage according to an embodiment of the present disclosure, wherein the purification device is hung on the baby carriage in an environment;

FIG. 1B is a schematic view illustrating the purification device of the baby carriage according to an embodiment of the present disclosure, wherein the purification device is hung on an isolation cover of the baby carriage in an environment;

FIG. 2A is a schematic exterior view illustrating the purification device of the baby carriage according to the embodiment of the present disclosure;

FIG. 2B is a flow chart of a gas-purification processing method of the purification device of the baby carriage of the present disclosure;

FIG. 3A is a schematic cross-sectional view illustrating the purification device of the baby carriage of the present disclosure;

FIG. 3B is a schematic cross-sectional view illustrating a purification unit formed by combining the filter screen of FIG. 3A with a photo-catalyst unit;

FIG. 3C is a schematic cross-sectional view illustrating a purification unit formed by combining the filter screen of FIG. 3A with a photo-plasma unit;

FIG. 3D is a schematic cross-sectional view illustrating a purification unit formed by combining the filter screen of FIG. 3A with a negative ionizer;

FIG. 3E is a schematic cross-sectional view illustrating a purification unit formed by combining the filter screen of FIG. 3A with a plasma ion unit;

FIG. 4A is a schematic exploded front view illustrating the related components of the actuating pump served as the gas guider of the purification device of the baby carriage according to the embodiment of the present disclosure;

FIG. 4B is a schematic exploded rear view illustrating the related components of the actuating pump served as the gas guider of the purification device of the baby carriage according to the embodiment of the present disclosure;

FIG. 5A is a schematic cross-sectional view illustrating the assembled actuating pump served as the gas guider of the purification device of the baby carriage in FIG. 4A according to an embodiment of the present disclosure;

FIG. 5B is a schematic cross-sectional view illustrating the assembled actuating pump of the gas guider of the purification device of the baby carriage in FIG. 4A according to another embodiment of the present disclosure;

FIGS. 5C to 5E schematically illustrate the operation steps of the actuating pump of FIG. 5A;

FIG. 6A is schematic exterior view illustrating a gas detection module of the purification device of the baby carriage according to the embodiment of the present disclosure;

FIG. 6B is schematic exterior view illustrating a gas detection main part of the gas detection module in FIG. 6A;

FIG. 6C is a schematic exploded view illustrating the gas detection main part in FIG. 6B;

FIG. 7A is a schematic perspective front view illustrating a base of the gas detection main part in FIG. 6C;

FIG. 7B is a schematic perspective rear view illustrating the base of the gas detection main part in FIG. 6C;

FIG. 8 is a schematic perspective view illustrating a laser component and a particulate sensor accommodated in the base of the gas detection main part in FIG. 6C;

FIG. 9A is a schematic exploded view illustrating the combination of the piezoelectric actuator and the base of the gas detection main part in FIG. 6C;

FIG. 9B is a schematic perspective view illustrating the combination of the piezoelectric actuator and the base of the gas detection main part in FIG. 6C;

FIG. 10A is a schematic exploded front view illustrating the piezoelectric actuator of the gas detection main part in FIG. 6C;

FIG. 10B is a schematic exploded rear view illustrating the piezoelectric actuator of the gas detection main part in FIG. 6C;

FIG. 11A is a schematic cross-sectional view illustrating the piezoelectric actuator of the gas detection main part in FIG. 10A accommodated in the gas-guiding-component loading region according to the embodiment of the present disclosure;

FIGS. 11B and 11C schematically illustrate the operation steps of the piezoelectric actuator of FIG. 11A;

FIGS. 12A to 12C schematically illustrate gas flowing paths of the gas detection main part in FIG. 6B;

FIG. 13 schematically illustrates a light beam path emitted from the laser component of the gas detection main body in FIG. 6C; and

FIG. 14 a block diagram illustrating a configuration of a controlling circuit board and the related components of the purification device of the baby carriage according to the embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The present disclosure will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.

Please refer to FIGS. 1A, 1B, 2A, 2B and 3A. The present disclosure provides a purification device of a baby carriage 100 applied in the baby carriage 100 and including a main body 1, a purification unit 2, a gas guider 3, a gas detection module 4 and a power unit 5. In the embodiment, the power unit 5 provides power for the purification unit 2, the gas guider 3 and the gas detection module 4 to start operation. The main body 1 is disposed on the baby carriage 100 and includes at least one inlet 11 and at least one outlet 12. The purification unit 2 is disposed in the main body 1 for filtering a gas introduced into the main body 1 through the at least one inlet 11. The gas guider 3 disposed in the main body 1 is adjacent to the at least one outlet 12 for filtering and purifying the gas outside the main body 1 inhaled and flowed through the purification unit 2, so that a purified gas is filtered and discharged out through the at least one outlet 12. The gas detection module 4 is disposed in the main body 1 for detecting a particle concentration of suspended particles contained in the purified gas filtered through the purification unit2. In the embodiment, the gas guider 3 is constantly controlled to operate and export a gas at an airflow rate within 3 minutes to reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 μg/m³, so as to provide the purified gas through safe filtration to a baby breathed in the baby carriage 100.

In addition, the present disclosure provides a purification device of a baby carriage 100A. How to apply the purification device to the baby carriage 100 and perform a gas purification procedure is described as below.

Firstly, in one embodiment of the present disclosure, as shown in FIG. 2B, a gas-purification processing method of the purification device of the baby carriage is provided, and includes the following steps.

In a step S 1, a purification device of a baby carriage 100A is provided for filtering and purifying the gas, and exporting a purified gas. As shown in FIG. 3A, the purification device of a baby carriage 100A is formed by disposing the purification unit 2, the gas guider 3 and the gas detection module 4 in the main body 1, for filtering and purifying the gas, and exporting a purified gas. In the embodiment, as shown in FIG lA and FIG. 2A, the main body 1 of the purification device of a baby carriage 100A is a directional gas-guiding device, which is fixedly combined with the baby carriage 100 for implementation by a fixed frame 101. Moreover, a directional guiding element 14 is disposed in the at least one outlet 12 of the main body 1, so that a purified gas that has been directional filtered can be discharged from the at least one outlet 12. In the embodiment, the at least one outlet 12 of the main body 1 maintains a breathing distance L from a breathing region of the baby in the baby carriage 100, and the breathing distance L is ranged from 60 cm to 200 cm.

In a step S2, a particle concentration of the suspended particles contained in the purified gas in the baby carriage 100 is detected in real time. As shown in FIG. 3A, the particle concentration of the suspended particles contained in the purified gas and filtered by the purification unit 2 is detected by the gas detection module 4 in real time.

In a step S3, the gas detection module 4 detects, issues an alarm and/or notification and feeds back to adjust the airflow rate of the gas guider 3, which is constantly controlled to operate and export a gas at an airflow rate within 3 minutes to reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 μg/m³, so as to provide the purified gas by safe filtration for a baby to breath in the baby carriage 100. In the embodiment, the gas detection module 4 detects the particle concentration of the suspended particles contained in the purified gas with a set threshold of 0.75 μg/m³. As shown in FIG. 6A and FIG. 14 , the gas detection module 4 includes a controlling circuit board 4 a, a gas detection main part 4 b, a microprocessor 4 c and a communicator 4 d. In the embodiment, the gas detection main part 4 b, the microprocessor 4 c and the communicator 4 d are integrally packaged on the controlling circuit board 4 a and electrically connected to the controlling circuit board 4 a. The microprocessor 4 c receives a detection datum of the particle concentration of the suspended particles contained in the purified gas from the gas detection module 4 for calculating and processing, and controls to enable and/or disabled the operations of the gas guider 3 for filtering and purifying the gas. The communicator 4 d transmits the detection datum of the particle concentration received from the microprocessor 4 c to an external device 6, such as a mobile device, a smart watch, a wearable device, a computer or a cloud device, through a communication transmission, so that the external device 6 obtains the detection datum of the particle concentration of the purified gas for recording, issuing an alarm and/or notification, and feeding back to the purification device of a baby carriage 100A to adjust the airflow rate of the gas guider 3. When the particle concentration in the detection datum is higher than the set threshold of particle concentration (i.e., 0.75 μg/m³), the external device 6 issues an alarm and/or notification and gives feedback to notify the purification device of a baby carriage 100A to adjust the airflow rate of the gas guider 3 and control the gas guider 3 to operate and export a gas continuously within 3 minutes, and the airflow rate exported by the gas guider 3 is at least 800 ft³/min (cubic foot per minute, CFM.) to reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 μg/m³, so as to provide the purified gas by safe filtration for the baby to breath in the baby carriage 100. Certainly, in another embodiment, as shown in FIG. 1B, the baby carriage 100 further includes an isolation cover 8 for covering the baby carriage 100 and the baby in the baby carriage 100. Moreover, the isolation cover 8 has an opening 81 for the main body 1 to be fixed in the opening 81, the at least one inlet 11 of the main body 1 is located outside the isolation cover 8, and the at least one outlet 12 of the main body 1 is located inside the isolation cover 8. The at least one outlet 12 of the main body 1 maintains at a breathing distance L from a breathing region of the baby in the baby carriage 100, and the breathing distance L is ranged from 60 cm to 200 cm. In this way, the airflow rate exported by the gas guider 3 of the purification device of a baby carriage 100A is less than 800 ft³/min and doesn't require larger airflow rate. Inside the insolation cover 8, the purified gas provided by safe filtration is enough for the baby to breath in the baby carriage 100. Preferably but not exclusively, the external communication transmission of the communicator 4 d is may be a wired two-way communication transmission, such as a USB communication transmission, or a wireless communication transmission, such as Wi-Fi communication transmission, Bluetooth communication transmission, a radio frequency identification communication transmission, or a near field communication (NFC) transmission.

According to the above description, the gas detection module 4 is utilized in the purification device of a baby carriage 100A of the present disclosure to monitor the air quality in the baby carriage 100 in real time, and the purification unit 2 is utilized in the purification device of a baby carriage 100A of the present disclosure to provide a solution for purifying and improving the air quality. In this way, the gas detection module 4 and the purification unit 2 combined with the gas guider 3 can export a gas at a specific airflow rate, so as to provide the purified gas by filtering of purification unit 2. In addition, the gas guider 3 constantly controls the exported airflow rate within 3 minutes to reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 m/m3, so as to achieve the purification effect of safe filtration. Moreover, the gas detection module 4 is used to detect the breathing region of the baby in the baby carriage 100, so as to ensure that the purified gas is provided by safe filtration. The real-time information is available, such that the preventive measures can be taken immediately, or the isolation cover 8 can be provided for isolating the air in the outside environment.

As shown in FIG. 3A, in the embodiment, the main body 1 further includes a gas-flow channel 13 disposed between the at least one inlet 11 and the at least one outlet 12. The purification unit 2 is disposed in the gas-flow channel 13 for filtering and purifying the gas. The gas guider 3 is disposed in the gas-flow channel 13 and located at a side of the purification unit 2, so that the gas is inhaled through the at least one inlet 11, flows through the purification unit 2 for filtering and generating the purified gas, and is discharged out through the at least one outlet 12. In this way, the gas detection module 4 can control the enablement and disablement state operations of the gas guider 3. When the gas guider 3 is enabled, the gas outside the main body 1 is inhaled through the at least one inlet 11, flows through the purification unit 2 for filtering and purifying, and is discharged out through the at least one outlet 12, so as to provide the filtered and purified gas to the baby for breathing

The above-mentioned purification unit 2 disposed in the gas-flow channel 13 can be implemented in embodiments. For example, as shown in FIG. 3A, the purification unit 2 includes a high efficiency particulate air (HEPA) filter screen 2 a. When the gas is introduced into the gas-flow channel 13 by the gas guider 3, and the gas is filtered through the HEPA filter screen 2 a to adsorb the chemical smoke, bacteria, dust particles and pollen contained in the gas to achieve the effects of filtering and purifying the gas introduced into the main body 1. In some embodiments, the HEAP filter screen 2 a is coated with a cleansing factor containing chlorine dioxide to inhibit viruses, bacteria, influenza A virus, influenza B virus, enterovirus or norovirus in the gas outside the main body 1. The inhibition rate can reach more than 99%. It is helpful of reducing the cross-infection of viruses. In other embodiments, the HEPA filter screen 2 a is coated with a herbal protective layer extracted from ginkgo and Japanese rhus chinensis to form a herbal protective anti-allergic filter, so as to resist allergy effectively and destroy a surface protein of influenza virus, such as H1N1 influenza virus, in the gas introduced into the main body 1 and passing through HEPA filter screen 2 a. In some other embodiments, the HEPA filter screen 2 a is coated with a silver ion to inhibit viruses and bacteria contained in the gas introduced into the main body 1.

As shown in FIG. 3B, in the embodiment, the purification unit 2 includes a photo-catalyst unit 2 b combined with the HEPA filter screen 2 a. The photo-catalyst unit 2 b includes a photo-catalyst 21 b and an ultraviolet lamp 22 b. The photo-catalyst 21 b is irradiated with the ultraviolet lamp 22 b to decompose the gas introduced into the main body 1 for filtering and purification, so as to purify the gas. In the embodiment, the photo-catalyst 21 b and the ultraviolet lamp 22 b are disposed in the gas-flow channel 13, respectively, and spaced apart from each other at a distance. In the embodiment, the gas outside the main body 1 is introduced into the gas-flow channel 13 by the gas guider 3, and the photo-catalyst 21 b is irradiated by the ultraviolet lamp 22 b to convert light energy into chemical energy, thereby decomposes harmful gases and disinfect bacteria contained in the gas, so as to achieve the effects of filtering and purifying the introduced gas.

As shown in FIG. 3C, in the embodiment, the purification unit 2 includes a photo-plasma unit 2 c combined with the HEPA filter screen 2 a. The photo-plasma unit 2 c includes a nanometer irradiation tube 21 c. The gas introduced into the main body 1 is irradiated by the nanometer irradiation tube 21 c to decompose volatile organic gases contained in the gas and purify the gas. In the embodiment, the nanometer irradiation tube 21 c is disposed in the gas-flow channel 13. When the gas outside the main body 1 is introduced into the gas-flow channel 13 by the gas guider 3, the gas is irradiated by the nanometer irradiation tube 21 c, thereby decomposes oxygen molecules and water molecules contained in the gas into high oxidizing photo-plasma, which is an ion flow capable of destroying organic molecules. In that, volatile formaldehyde, volatile toluene and volatile organic (VOC) gases contained in the gas are decomposed into water and carbon dioxide, so as to achieve the effects of filtering and purifying the introduced gas.

As shown in FIG. 3D, in the embodiment, the purification unit 2 includes a negative ionizer 2 d combined with the HEPA filter screen 2 a. The negative ionizer 2 d includes at least one electrode wire 21 d, at least one dust collecting plate 22 d and a boost power supply device 23 d. When a high voltage is discharged through the electrode wire 21 d, the suspended particles contained in the gas introduced into the main body 1 are attached to the dust collecting plate 22 d, so as to purify the gas. In the embodiment, the at least one electrode wire 21 d and the at least one dust collecting plate 22 d are disposed within the gas-flow channel 13. When the at least one electrode wire 21 d is provided with a high voltage to discharge, the dust collecting plate 22 d is carry with negative charge. When the gas outside the main body 1 is introduced into the gas-flow channel 13 by the gas guider 3, the at least one electrode wire 21 d discharges to make the suspended particles in the gas to carry with positive charge, and therefore the suspended particles having positive charge are adhered to the dust collecting plate 22 d carry with negative charges, so as to achieve the effects of filtering and purifying the introduced gas.

As shown in FIG. 3E, in the embodiment, the purification unit 2 includes a plasma ion unit 2 e combined with the HEPA filter screen 2 a. The plasma ion unit 2 e includes a first electric-field protection screen 21 e, an adsorption filter screen 22 e, a high-voltage discharge electrode 23 e, a second electric-field protection screen 24 e and a boost power supply device 25 e. The boot power supply device 25 e provides a high voltage to the high-voltage discharge electrode 23 e to discharge and form a high-voltage plasma column with plasma ion, so as to decompose viruses or bacteria contained in the gas introduced into the main body 1 by the plasma ion. In the embodiment, the upper electric-field protection screen 21 e, the adsorption filter screen 22 e, the high-voltage discharge electrode 23 e and the lower electric-field protection screen 24 e are disposed within the gas-flow channel 13. The adsorption filter screen 22 e and the high-voltage discharge electrode 23 e are located between the upper electric-field protection screen 21 e and the lower electric-field protection screen 24 e. As the high-voltage discharge electrode 23 e is provided with a high voltage by the boot power supply 25 e, a high-voltage plasma column with plasma ion is formed. When the gas outside the main body 1 is introduced into the gas-guiding channel 13 by the gas guider 3, oxygen molecules and water molecules contained in the gas are decomposed into positive hydrogen ions (H⁺) and negative oxygen ions (O₂) through the plasma ion. The substances attached with water around the ions are adhered on the surface of viruses and bacteria and converted into OH radicals with extremely strong oxidizing power, thereby removing hydrogen (H) from the protein on the surface of viruses and bacteria, and thus decomposing (oxidizing) the protein, so as to filter the introduced gas and achieve the effects of filtering and purifying.

Preferably but not exclusively, the gas guider 3 is a fan, such as a vortex fan or a centrifugal fan. Alternatively, the gas guider 3 is an actuating pump 30, as shown in FIGS. 4A, 4B, 5A and 5B. In the embodiment, the actuating pump 30 includes a gas inlet plate 301, a resonance plate 302, a piezoelectric actuator 303, a first insulation plate 304, a conducting plate 305 and a second insulation plate 306, which are sequentially stacked on each other. In the embodiment, the gas inlet plate 301 includes at least one inlet aperture 301 a, at least one convergence channel 301 b and a convergence chamber 301 c. The at least one gas inlet aperture 301 a is disposed to inhale the gas outside the main body 1. The at least one gas inlet aperture 301 a correspondingly penetrates through the gas inlet plate 301 into the at least one convergence channel 301 b, and the at least one convergence channel 301 b is converged into the convergence chamber 301 c. In that, the gas inhaled through the at least one gas inlet aperture 301 a is converged into the convergence chamber 301 c. The number of the gas inlet apertures 301 a is the same as the number of the convergence channels 301 b. In the embodiment, the number of the gas inlet apertures 301 a and the convergence channels 301 b is exemplified by four, but not limited thereto. The four gas inlet apertures 301 a penetrate through gas inlet plate 301 into the four convergence channels 301 b respectively, and the four convergence channels 301 b converge to the convergence chamber 301 c.

Please refer to FIGS. 4A, 4B and 5A. The resonance plate 302 is attaching and assembling on the gas inlet plate 301. The resonance plate 302 has a central aperture 302 a, a movable part 302 b and a fixed part 302 c. The central aperture 302 a is located at a center of the resonance plate 302 and is corresponding in position to the convergence chamber 301 c of the gas inlet plate 301. The movable part 302 b surrounds the central aperture 302 a and is corresponding in position to the convergence chamber 301 c. The fixed part 302 c is disposed around the periphery of the resonance plate 302 and firmly attached on the gas inlet plate 301.

Please refer to FIGS. 4A, 4B and 5A, again. The piezoelectric actuator 303 includes a suspension plate 303 a, an outer frame 303 b, at least one bracket 303 c, a piezoelectric element 303 d, at least one vacant space 303 e and a bulge 303E The suspension plate 303 a is square-shaped because the square suspension plate 303 a is more power-saving than the circular suspension plate. Generally, the consumed power of the capacitive load at the resonance frequency is positive related to the resonance frequency. Since the resonance frequency of the square suspension plate 303 a is obviously lower than that of the circular square suspension plate, the consumed power of the square suspension plate 303 a is fewer. Therefore, the square suspension plate 303 a in this embodiment is more effective in power-saving. In the embodiment, the outer frame 303 b is disposed around the periphery of the suspension plate 303 a. The at least one bracket 303 c is connected between the suspension plate 303 a and the outer frame 303 b for elastically supporting the suspension plate 303 a. The piezoelectric element 303 d has a side, and a length of the side of the piezoelectric element 303 d is less than or equal to that of the suspension plate 303 a. The piezoelectric element 303 d is attached on a surface of the suspension plate 303 a. When a voltage is applied to the piezoelectric element 303 d, the suspension plate 303 a is driven to undergo the bending deformation. The at least one vacant space 303 e is formed between the suspension plate 303 a, the outer frame 303 b and the at least one bracket 303 c for allowing the gas to flow therethrough. The bulge 303 f is formed on a surface of the suspension plate 303 a opposite to the surface of the suspension plate 303 a that the piezoelectric element 303 d is attached thereon. In this embodiment, the bulge 303 f may be a convex structure integrally formed by using an etching process on the suspension plate 303 a, which is opposite to the surface of the suspension plate 303 a that the piezoelectric element 303 d attached thereon, and formed a stepped structure.

Please refer to FIGS. 4A, 4B and 5A. In the embodiment, the gas inlet plate 301, the resonance plate 302, the piezoelectric actuator 303, the first insulation plate 304, the conducting plate 305 and the second insulation plate 306 are stacked and assembled sequentially. A chamber space 307 is formed between the suspension plate 303 a and the resonance plate 302, and the chamber space 307 can be formed by filling a gap between the resonance plate 302 and the outer frame 303 b of the piezoelectric actuator 303 with a material, such as a conductive adhesive, but not limited thereto. Thus, a specific depth between the resonance plate 302 and the suspension plate 303 a is maintained to form the chamber space 307 and allow the gas to pass rapidly. In addition, since a suitable distance between the resonance plate 302 and the suspension plate 303 a are maintained, so that the contact interference therebetween is reduced and the noise generated thereby is largely reduced. In some other embodiments, the thickness of the conductive adhesive filled into the gap between the resonance plate 302 and the outer frame 303 b of the piezoelectric actuator 303 is reduced by increasing the height of the outer frame 303 b of the piezoelectric actuator 303. Therefore, the entire assembling structure of actuating pump 30 would not indirectly influenced by the impact on the filling material result of the hot pressing temperature and the cooling temperature, so as to avoid the actual size of the formed chamber space 307 being influenced by the thermal expansion and cooling contraction of the filling material, i.e. conductive adhesive, but not limited thereto. In addition, since the transportation effect of the actuating pump 30 is affected by the chamber space 307, maintain the chamber space 307 is very important to provide a stable transportation efficiency of the actuating pump 30.

Please refer to FIG. 5B, in some other embodiments of the piezoelectric actuator 303, the suspension plate 303 a is formed by stamping to make it extend outwardly a distance. The extended distance can be adjusted through the at least one bracket 303 c formed between the suspension plate 303 a and the outer frame 303 b. Consequently, the surface of the bulge 303 f disposed on the suspension plate 303 a and the surface of the outer frame 303 b are non-coplanar. Through applying small amount of filling materials, such as a conductive adhesive, to the coupling surface of the outer frame 303 b, the piezoelectric actuator 303 is attached to the fixed part 302 c of the resonance plate 302 by hot pressing, thereby assembling the piezoelectric actuator 303 and the resonance plates 302 in combination. Thus, the structure of the chamber space 307 is improved by directly stamping the suspension plate 303 a of the piezoelectric actuator 303 described above. In this way, the required chamber space 307 can be obtained by adjusting the stamping distance of the suspension plate 303 a of the piezoelectric actuator 303, thereby simplifying the structural design of the chamber space 307, and also achieving the advantages of simplifying the manufacturing process and shortening the processing time. In addition, the first insulating plate 304, the conducting plate 305 and the second insulating plate 306 are all thin frame-shaped sheets, but are not limited thereto, and are sequentially stacked on the piezoelectric actuator 303 to complete the entire structure of actuating pump 30.

In order to understand the operation steps of the actuating pump 30, please refer to FIGS. 5C to 5E. Please refer to FIG. 5C, the piezoelectric element 303 d of the piezoelectric actuator 303 is deformed after a voltage is applied thereto, and the suspension plate 303 a is driven to displace downwardly. In that, the volume of the chamber space 307 is increased, a negative pressure is generated in the chamber space 307, and the gas in the convergence chamber 301 c is introduced into the chamber space 307. At the same time, the resonance plate 302 is thus displaced downwardly and synchronously in resonance with the suspension plate 303 a. Thereby, the volume of the convergence chamber 301 c is increased. Since the gas in the convergence chamber 301 c is introduced into the chamber space 307, the convergence chamber 301 c is also in a negative pressure state, and therefore the gas is sucked into the convergence chamber 301 c through the gas inlet apertures 301 a and the convergence channels 301 b. Then, as shown in FIG. 5D, the piezoelectric element 303 d drives the suspension plate 303 a to displace upwardly to compress the chamber space 307. Similarly, the resonance plate 302 is actuated in resonance with the suspension plate 303 a and is displaced upwardly. Thus, the gas in the chamber space 307 is further transported downwardly to pass through the vacant spaces 303 e, and thereby achieving the effect of gas transportation. Finally, as shown in FIG. 5E, when the suspension plate 303 a is driven and return to an initial state, the resonance plate 302 is also driven to displace downwardly due to inertia. In that, the resonance plate 302 pushes the gas in the chamber space 307 toward the vacant spaces 303 e, and increase the volume of the convergence chamber 301 c. Thus, the gas can continuously pass through the gas inlet apertures 301 a and the convergence channels 301 b, and then converged in the convergence chamber 301 c. By repeating the operation steps illustrated in FIGS. 5C to 5E continuously, the actuating pump 30 can continuously transport the gas at high speed. The gas enters the gas inlet apertures 301 a, flows through a flow path formed by the gas inlet plate 301 and the resonance plate 302 and generates a pressure gradient, and then transported downwardly through the vacant spaces 303 e, so as to complete the gas transporting operation of the actuating pump 30.

Please refer to FIG. 6A to FIG. 6C, FIG. 7A to FIG. 7B, FIG. 8 , FIG. 9A to FIG. 9B and FIG. 14 . In the embodiment, the gas detection module 4 includes a controlling circuit board 4 a, a gas detection main part 4 b, a microprocessor 4 c and a communicator 4 d. The gas detection main part 4 b, the microprocessor 4 c and the communicator 4 d are integrally packaged on the controlling circuit board 4 a and electrically connected to the controlling circuit board 4 a. The microprocessor 4 c receives a detection datum of the particle concentration of the suspended particles contained in the purified gas for calculating and processing, and controls to enable and/or disabled the operations of the gas guider 3 for filtering and purifying the gas. The communicator 4 d transmits the detection datum of the particle concentration received from the microprocessor 4 c to an external device 6 through a communication transmission.

As shown in FIG. 6A to FIG. 6C, FIG. 7A to FIG. 7B, FIG. 8 , FIG. 9A to FIG. 9B, FIG. 10A to FIG. 10B and FIG. 12A to FIG. 12C, in the embodiment, the gas detection main part 4 b includes a base 41, a piezoelectric actuator 42, a driving circuit board 43, a laser component 44, a particulate sensor 45 and an outer cover 46. The base 41 includes a first surface 411, a second surface 412, a laser loading region 413, a gas-inlet groove 414, a gas-guiding-component loading region 415 and a gas-outlet groove 416. In the embodiment, the first surface 411 and the second surface 412 are two surfaces opposite to each other. In the embodiment, the laser loading region 413 is hollowed out from the first surface 411 to the second surface 412. The gas-inlet groove 414 is concavely formed from the second surface 412 and disposed adjacent to the laser loading region 413. The gas-inlet groove 414 includes a gas-inlet 414 a and two lateral walls. The gas-inlet 414 a is in communication with an environment outside the base 41, and is spatially corresponding in position to an inlet opening 461 a of the outer cover 46. A transparent window 414 b is opened on the two lateral walls and is in communication with the laser loading region 413. Therefore, the first surface 411 of the base 41 is covered and attached by the outer cover 46, and the second surface 412 is covered and attached by the driving circuit board 43. Thus, the gas-inlet groove 414 defines an inlet path, as shown in FIG. 8 and FIG. 12A.

Please refer to FIGS. 7A to 7B. In the embodiment, the gas-guiding-component loading region 415 is concavely formed from the second surface 412 and in communication with the gas-inlet groove 414. A ventilation hole 415 a penetrates a bottom surface of the gas-guiding-component loading region 415. In the embodiment, the gas-outlet groove 416 includes a gas-outlet 416 a, and the gas-outlet 416 a is spatially corresponding to the outlet opening 461 b of the outer cover 46. The gas-outlet groove 416 includes a first section 416 b and a second section 416 c. The first section 416 b is concavely formed on a region out from the first surface 411 spatially corresponding to a vertical projection area of the gas-guiding-component loading region 415. The second section 416 c is hollowed out from the first surface 411 to the second surface 412 in a region where the first surface 411 is not aligned with the vertical projection area of the gas-guiding-component loading region 415 and extended therefrom. The first section 416 b and the second section 416 c are connected to form a stepped structure. Moreover, the first section 416 b of the gas-outlet groove 416 is in communication with the ventilation hole 415 a of the gas-guiding-component loading region 415, and the second section 416 c of the gas-outlet groove 416 is in communication with the gas-outlet 416 a. In that, when first surface 411 of the base 41 is attached and covered by the outer cover 46, and the second surface 412 of the base 41 is attached and covered by the driving circuit board 43, such that the gas-outlet groove 416 and the driving circuit board 43 collaboratively defines an outlet path, as shown in FIG. 8 to FIG. 12C.

Please refer to FIG. 6C and FIG. 8 . In the embodiment, the laser component 44 and the particulate sensor 45 are disposed on the driving circuit board 43 and accommodated in the base 41. In order to clearly describe the positions of the laser component 44 and the particulate sensor 45 in the base 41, the driving circuit board 43 is omitted in FIG. 8 . Please refer to FIG. 6C, FIG. 7B, and FIG. 8 , the laser component 44 is accommodated in the laser loading region 413 of the base 41, and the particulate sensor 45 is accommodated in the gas-inlet groove 414 of the base 41 and is aligned to the laser component 44. In addition, the laser component 44 is spatially corresponding to the transparent window 414 b, a light beam emitted by the laser component 44 passes through the transparent window 414 b and irradiates into the gas-inlet groove 414. A light beam path emitted from the laser component 44 passes through the transparent window 414 b and extends in a direction perpendicular to the gas-inlet groove 414. In the embodiment, a projecting light beam emitted from the laser component 44 passes through the transparent window 414 b and enters the gas-inlet groove 414, and suspended particles contained in the gas passing through the gas-inlet groove 414 is irradiated by the projecting light beam. When the suspended particles contained in the gas are irradiated and generate scattered light spots, the scattered light spots are received and calculated by the particulate sensor 45 for obtaining related information about the sizes and the concentration of the suspended particles contained in the gas. For example, the suspended particles contained in the gas include bacteria and viruses. In the embodiment, the particulate sensor 45 is a PM2.5 sensor.

Please refer to FIG. 9A and FIG. 9B. The piezoelectric actuator 42 is accommodated in the gas-guiding-component loading region 415 of the base 41. Preferably but not exclusively, the gas-guiding-component loading region 415 is square-shaped and includes four positioning protrusions 145 b disposed at four corners of the gas-guiding-component loading region 415, respectively. The piezoelectric actuator 42 is disposed in the gas-guiding-component loading region 415 through the four positioning protrusions 415 b. In addition, as shown in FIGS. 7A, 7B, 12B and 12C, the gas-guiding-component loading region 415 is in communication with the gas-inlet groove 414. When the piezoelectric actuator 42 is enabled, the gas in the gas-inlet groove 414 is inhaled by the piezoelectric actuator 42, so that the gas flows into the piezoelectric actuator 42, and the gas is transported into the gas-outlet groove 416 through the ventilation hole 415 a of the gas-guiding-component loading region 415.

Please refer to FIGS. 6B and 6C. In the embodiment, the driving circuit board 43 covers and is attached to the second surface 412 of the base 41, and the laser component 44 is positioned and disposed on the driving circuit board 43, and is electrically connected to the driving circuit board 43. The particulate sensor 45 is positioned and disposed on the driving circuit board 43, and is electrically connected to the driving circuit board 43. As shown in FIG. 6B, when the outer cover 46 covers the base 41, the inlet opening 461 a is spatially corresponding to the gas-inlet 414 a of the base 41 (as shown in FIG. 12A), and the outlet opening 461 b is spatially corresponding to the gas-outlet 416 a of the base 41 (as shown in FIG. 12C).

Please refer to FIGS. 10A and 10B. In the embodiment, the piezoelectric actuator 42 includes a gas-injection plate 421, a chamber frame 422, an actuator element 423, an insulation frame 424 and a conductive frame 425. In the embodiment, the gas-injection plate 421 is made by a flexible material and includes a suspension plate 421 a and a hollow aperture 421 b. The suspension plate 421 a is a sheet structure and permitted to undergo a bending deformation. Preferably but not exclusively, the shape and the size of the suspension plate 421 a are accommodated in the inner edge of the gas-guiding-component loading region 415, but not limited thereto. The shape of the suspension plate 421 a is selected from the group consisting of a square, a circle, an ellipse, a triangle and a polygon. The hollow aperture 421 b passes through a center of the suspension plate 421 a, so as to allow the gas to flow therethrough.

Please refer to FIG. 10A, FIG. 10B and FIG. 11A. In the embodiment, the chamber frame 422 is carried and stacked on the gas-injection plate 421. In addition, the shape of the chamber frame 422 is corresponding to the gas-injection plate 421. The actuator element 423 is carried and stacked on the chamber frame 422. A resonance chamber 426 is collaboratively defined by the actuator element 423, the chamber frame 422 and the suspension plate 421 a and is formed between the actuator element 423, the chamber frame 422 and the suspension plate 421 a. The insulation frame 424 is carried and stacked on the actuator element 423 and the appearance of the insulation frame 424 is similar to that of the chamber frame 422. The conductive frame 425 is carried and stacked on the insulation frame 424, and the appearance of the conductive frame 425 is similar to that of the insulation frame 424. In addition, the conductive frame 245 includes a conducting pin 425 a and a conducting electrode 425 b. The conducting pin 425 a is extended outwardly from an outer edge of the conductive frame 425, and the conducting electrode 425 b is extended inwardly from an inner edge of the conductive frame 425. Moreover, the actuator element 423 further includes a piezoelectric carrying plate 423 a, an adjusting resonance plate 423 b and a piezoelectric plate 423 c. The piezoelectric carrying plate 423 a is carried and stacked on the chamber frame 422. The adjusting resonance plate 423 b is carried and stacked on the piezoelectric carrying plate 423 a. The piezoelectric plate 423 c is carried and stacked on the adjusting resonance plate 423 b. The adjusting resonance plate 423 b and the piezoelectric plate 423 c are accommodated in the insulation frame 424. The conducting electrode 425 b of the conductive frame 425 is electrically connected to the piezoelectric plate 423 c. In the embodiment, the piezoelectric carrying plate 423 a and the adjusting resonance plate 423 b are made by a conductive material. The piezoelectric carrying plate 423 a includes a piezoelectric pin 423 d. The piezoelectric pin 423 d and the conducting pin 425 a are electrically connected to a driving circuit (not shown) of the driving circuit board 43, so as to receive a driving signal, such as a driving frequency and a driving voltage. Through this structure, a circuit is formed by the piezoelectric pin 423 d, the piezoelectric carrying plate 423 a, the adjusting resonance plate 423 b, the piezoelectric plate 423 c, the conducting electrode 425 b, the conductive frame 425 and the conducting pin 425 a for transmitting the driving signal. Moreover, the insulation frame 424 is insulated between the conductive frame 425 and the actuator element 423, so as to avoid the occurrence of a short circuit. Thereby, the driving signal is transmitted to the piezoelectric plate 423 c. After receiving the driving signal such as the driving frequency and the driving voltage, the piezoelectric plate 423 c deforms due to the piezoelectric effect, and the piezoelectric carrying plate 423 a and the adjusting resonance plate 423 b are further driven to generate the bending deformation in the reciprocating manner

As described above, the adjusting resonance plate 423 b is located between the piezoelectric plate 423 c and the piezoelectric carrying plate 423 a and served as a cushion between the piezoelectric plate 423 c and the piezoelectric carrying plate 423 a. Thereby, the vibration frequency of the piezoelectric carrying plate 423 a is adjustable. Basically, the thickness of the adjusting resonance plate 423 b is greater than the thickness of the piezoelectric carrying plate 423 a, and the thickness of the adjusting resonance plate 423 b is adjustable, thereby the vibration frequency of the actuator element 423 can be adjusted accordingly.

Please refer to FIG. 10A, FIG. 10B and FIG. 11A. In the embodiment, the gas-injection plate 421, the chamber frame 422, the actuator element 423, the insulation frame 424 and the conductive frame 425 are stacked and positioned in the gas-guiding-component loading region 415 sequentially, so that the piezoelectric actuator 42 is supported and positioned in the gas-guiding-component loading region 415. The bottom of the gas-injection plate 421 is fixed on the four positioning protrusions 415 b of the gas-guiding-component loading region 415 for supporting and positioning, so that a plurality of vacant spaces 421 c is defined between the suspension plate 421 a of the gas-injection plate 421 and an inner edge of the gas-guiding-component loading region 415 for gas flowing therethrough.

Please refer to FIG. 11A. A flowing chamber 427 is formed between the gas-injection plate 421 and the bottom surface of the gas-guiding-component loading region 415. The flowing chamber 427 is in communication with the resonance chamber 426 between the actuator element 423, the chamber frame 422 and the suspension plate 421 a through the hollow aperture 421 b of the gas-injection plate 421. By controlling the vibration frequency of the gas in the resonance chamber 426 to be close to the vibration frequency of the suspension plate 421 a, the Helmholtz resonance effect is generated between the resonance chamber 426 and the suspension plate 421 a, so as to improve the efficiency of gas transportation.

Please refer to FIG. 11B. When the piezoelectric plate 423 c is moved away from the bottom surface of the gas-guiding-component loading region 415, the suspension plate 421 a of the gas-injection plate 421 is driven to move away from the bottom surface of the gas-guiding-component loading region 415 by the piezoelectric plate 423 c. In that, the volume of the flowing chamber 427 is expanded rapidly, the internal pressure of the flowing chamber 427 is decreased to form a negative pressure, and the gas outside the piezoelectric actuator 42 is inhaled through the vacant spaces 421 c and enters the resonance chamber 426 through the hollow aperture 421 b. Consequently, the pressure in the resonance chamber 426 is increased to generate a pressure gradient. Further as shown in FIG. 11C, when the suspension plate 421 a of the gas-injection plate 421 is driven by the piezoelectric plate 423 c to move toward the bottom surface of the gas-guiding-component loading region 415, the gas in the resonance chamber 426 is discharged out rapidly through the hollow aperture 421 b, and the gas in the flowing chamber 427 is compressed, thereby the converged gas is quickly and massively ejected out of the flowing chamber 427 under the condition close to an ideal gas state of the Benulli's law, and transported to the ventilation hole 415 a of the gas-guiding-component loading region 415. By repeating the above operation steps shown in FIG. 11B and FIG. 11C, the piezoelectric plate 423 c is driven to generate the bending deformation in a reciprocating manner. According to the principle of inertia, since the gas pressure inside the resonance chamber 426 is lower than the equilibrium gas pressure after the converged gas is ejected out, the gas is introduced into the resonance chamber 426 again. Moreover, the vibration frequency of the gas in the resonance chamber 426 is controlled to be close to the vibration frequency of the piezoelectric plate 423 c, so as to generate the Helmholtz resonance effect to achieve the gas transportation at high speed and in large quantities.

Furthermore, as shown in FIG. 12A, the gas is inhaled through the inlet opening 461 a of the outer cover 46, flows into the gas-inlet groove 414 of the base 41 through the gas-inlet 414 a, and is transported to the position of the particulate sensor 45. Further as shown in FIG. 12B, the piezoelectric actuator 42 is enabled continuously to inhale the gas into the inlet path, and facilitate the gas to be introduced rapidly, flow stably, and be transported above the particulate sensor 45. At this time, a projecting light beam emitted from the laser component 44 passes through the transparent window 414 b to irritate on the suspended particles contained in the gas flowing above the particulate sensor 45 in the gas-inlet groove 414. When the suspended particles contained in the gas are irradiated and generate scattered light spots, the scattered light spots are received and calculated by the particulate sensor 45 for obtaining related information about the sizes and the concentration of the suspended particles contained in the gas. Moreover, the gas above the particle sensor 45 is continuously driven and transported by the piezoelectric actuator 42, flows into the ventilation hole 415 a of the gas-guiding-component loading region 415, and is transported to the first section 416 b of the gas-outlet groove 416. As shown in FIG. 12C, after the gas flows into the first section 416 b of the gas-outlet groove 416, the gas is continuously transported into the first section 416 b by the piezoelectric actuator 42, and the gas in the first section 416 b is pushed to the second section 416 c. Finally, the gas is discharged out through the gas-outlet 416 a and the outlet opening 461 b.

As shown in FIG. 13 , the base 41 further includes a light trapping region 417. The light trapping region 417 is hollowed out from the first surface 411 to the second surface 412 and is spatially corresponding to the laser loading region 413. In the embodiment, the light beam emitted by the laser component 44 is projected into the light trapping region 417 through the transparent window 414 b. The light trapping region 417 includes a light trapping structure 417 a having an oblique cone surface. The light trapping structure 417 a is spatially corresponding to the light beam path emitted from the laser component 44. In addition, the projecting light beam emitted from the laser component 44 is reflected into the light trapping region 417 through the oblique cone surface of the light trapping structure 417 a, so as to prevent the projecting light beam from reflecting to the position of the particulate sensor 45. In the embodiment, a light trapping distance d is maintained between the transparent window 414 b and a position where the light trapping structure 417 a receives the projecting light beam, so as to avoid the projecting light beam projected on the light trapping structure 417 a from reflecting back to the position of the particulate sensor 45 directly due to excessive stray light generated after reflection, and result in distortion of detection accuracy.

Please refer to FIG. 6Cand FIG. 13 . The gas detection module 4 of the present disclosure not only detects the suspended particles in the gas, but also detects the characteristics of the introduced gas. Preferably but not exclusively, the gas can be detected is selected from the group consisting of formaldehyde, ammonia, carbon monoxide, carbon dioxide, oxygen, ozone and a combination thereof In the embodiment, the gas detection module 4 further includes a first volatile-organic-compound sensor 47 a. The first volatile-organic-compound sensor 47 a positioned and disposed on the driving circuit board 43 is electrically connected to the driving circuit board 43, and accommodated in the gas-outlet groove 416, so as to detect the gas flowing through the outlet path of the gas-outlet groove 416. Thus, the concentration or the characteristics of volatile organic compounds contained in the gas in the outlet path can be detected. Alternatively, in an embodiment, the gas detection module 4 further includes a second volatile-organic-compound sensor 47 b. The second volatile-organic-compound sensor 47 b positioned and disposed on the driving circuit board 43 is electrically connected to the driving circuit board 43 and is accommodated in the light trapping region 417. Thus, the concentration or the characteristics of volatile organic compounds contained in the gas flowing through the inlet path of the gas-inlet groove 414 and transporting into the light trapping region 417 through the transparent window 414 b is detected.

In summary, the present disclosure provides a purification device of a baby carriage. A gas detection module is utilized to monitor the air quality in the environment at any time, and a purification unit is utilized to provide a solution for purifying and improving the air quality. In this way, the gas detection module and the purification unit combined with a gas guider can export a gas at a specific airflow amount, so as to achieve the filtering operation of purification unit and generate a purified gas. In addition, the gas guider constantly controls the airflow rate within 3 minutes to reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 μg/m³, so as to achieve the purification effect of safe filtration. Moreover, the gas detection module is used to detect the gas in the breathing area of the baby in the baby carriage, so as to provide the purified gas through safe filtration and obtain real-time information. When the particle concentration is too high, a warning notice can be sent. Preventive measures can be taken immediately, or an isolation cover can be provided for protection and taking protective measures in the isolation cover.

While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures. 

What is claimed is:
 1. A purification device of a baby carriage applied in the baby carriage, and comprising: a main body mounted on the baby carriage and comprising at least one inlet and at least one outlet; a purification unit disposed in the main body for filtering a gas introduced into the main body through the at least one inlet; a gas guider disposed in the main body and adjacent to the at least one outlet, wherein the gas outside the main body is inhaled by the gas guider and flows through the purification unit for filtering and purifying, so that a purified gas is generated by filtering and is discharged out through the at least one outlet; and a gas detection module disposed in the main body for detecting a particle concentration of suspended particles contained in the purified gas filtered through the purification unit, wherein the gas detection module comprises a gas detection main part, and the gas detection main part comprises: a base comprising: a first surface; a second surface opposite to the first surface; and a gas-guiding-component loading region concavely formed from the second surface; a piezoelectric actuator accommodated in the gas-guiding-component loading region; a driving circuit board covering and attached to the second surface of the base; a laser component positioned and disposed on the driving circuit board, and electrically connected to the driving circuit board; a particle sensor positioned and disposed on the driving circuit board, and electrically connected to the driving circuit board; and an outer cover covering the first surface of the base; wherein the main body is a directional gas-guiding device, which is fixedly combined with a fixed frame of the baby carriage, wherein a directional guiding element is disposed in the at least one outlet of the main body, so that a purified gas generated by directional filtering is discharged from the at least one outlet, and the gas guider is constantly controlled to operate and export the gas at an airflow rate within 3 minutes to reduce the particle concentration of the suspended particles contained in the purified gas to less than 0.75 μg/m3, so that the purified gas is provided by filtration to a baby breathing in the baby carriage.
 2. The purification device of the baby carriage according to claim 1, wherein the main body comprises a gas-flow channel disposed between the at least one inlet and the at least one outlet, wherein the purification unit is disposed in the gas-flow channel, and the gas guider is disposed in the gas-flow channel at a side of the purification unit, so that the gas outside the main body is inhaled through the at least one inlet, flows through the purification unit for filtering to generate the purified gas, and is discharged out through the at least one outlet.
 3. The purification device of the baby carriage according to claim 1, wherein the purification unit comprises a high efficiency particulate air filter screen.
 4. The purification device of the baby carriage according to claim 3, wherein the high efficiency particulate air filter screen is coated with an cleansing factor containing chlorine dioxide to inhibit viruses and bacteria in the gas.
 5. The purification device of the baby carriage according to claim 3, wherein the purification unit comprises a photo-catalyst unit combined with the high efficiency particulate air filter screen, the photo-catalyst unit comprises a photo-catalyst and an ultraviolet lamp, and the photo-catalyst is irradiated with the ultraviolet lamp to purify the gas introduced into the main body.
 6. The purification device of the baby carriage according to claim 1, wherein the gas guider is a fan.
 7. The purification device of the baby carriage according to claim 1, wherein the gas detection module comprises a controlling circuit board, a microprocessor and a communicator, and the gas detection main part, the microprocessor and the communicator are integrally packaged on the controlling circuit board and electrically connected to the controlling circuit board, wherein the microprocessor receives a detection datum of the particle concentration of the suspended particles contained in the purified gas from the gas detection module for calculating and processing, and controls to enable and disable the operations of the gas guider for gas filtering and purifying, wherein the communicator transmits the detection datum of the particle concentration received from the microprocessor to an external device, so that the external device obtains and records the detection datum of the particle concentration of the purified gas, issues an alarm notice and/or a notification, and feeds back to the purification device of the baby carriage to adjust the airflow rate of the gas guider.
 8. The purification device of the baby carriage according to claim 1, wherein the gas detection main part comprises: the base comprising: a laser loading region hollowed out from the first surface to the second surface; a gas-inlet groove concavely formed from the second surface and disposed adjacent to the laser loading region, wherein the gas-inlet groove comprises a gas-inlet and two lateral walls, the gas-inlet is in communication with an environment outside the base, and a transparent window is opened on the two lateral walls and is in communication with the laser loading region; a ventilation hole penetrates a bottom surface of the gas-guiding-component loading region, and the gas-guiding-component loading region has four positioning protrusions disposed at four corners thereof; and a gas-outlet groove concavely formed from the first surface, spatially corresponding to the bottom surface of the gas-guiding-component loading region, and hollowed out from the first surface to the second surface in a region where the first surface is not aligned with the gas- guiding-component loading region, wherein the gas-outlet groove is in communication with the ventilation hole, and a gas-outlet is disposed in the gas-outlet groove and in communication with the environment outside the base; the laser component accommodated in the laser loading region, wherein a light beam path emitted from the laser component passes through the transparent window and extends in a direction perpendicular to the gas-inlet groove; the particle sensor disposed at a position where the gas-inlet groove orthogonally intersects with the light beam path of the laser component, so that the suspended particles contained in the purified gas passing through the gas-inlet groove and irradiated by a projecting light beam emitted from the laser component are detected; the outer cover comprising a side plate, wherein the side plate has an inlet opening spatially corresponding to the gas-inlet and an outlet opening spatially corresponding to the gas-outlet, respectively; and a first volatile-organic-compound sensor positioned and disposed on the driving circuit board, electrically connected to the driving circuit board, and accommodated in the gas-outlet groove, so as to detect volatile organic compounds contained in the purified gas flowing through the outlet path of the gas-outlet groove; wherein the first surface of the base is covered with the outer cover, and the second surface of the base is covered with the driving circuit board, so that an inlet path is defined by the gas-inlet groove, and an outlet path is defined by the gas-outlet groove, so that the purified gas is inhaled from the environment outside the base by the piezoelectric actuator, transported into the inlet path defined by the gas-inlet groove through the inlet opening, and passes through the particle sensor to detect the particle concentration of the suspended particles contained in the purified gas, and the purified gas transported through the piezoelectric actuator is transported out of the outlet path defined by the gas-outlet groove through the ventilation hole and then discharged through the outlet opening.
 9. The purification device of the baby carriage according to claim 1, wherein the piezoelectric actuator comprises: a gas-injection plate comprising a suspension plate and a hollow aperture, wherein the suspension plate is permitted to undergo a bending deformation, and the hollow aperture is formed at a center of the suspension plate; a chamber frame carried and stacked on the suspension plate; an actuator element carried and stacked on the chamber frame and comprising a piezoelectric carrying plate, an adjusting resonance plate and a piezoelectric plate, wherein the piezoelectric carrying plate is carried and stacked on the chamber frame, the adjusting resonance plate is carried and stacked on the piezoelectric carrying plate, and the piezoelectric plate is carried and stacked on the adjusting resonance plate for receiving an voltage applied thereto and driving the piezoelectric carrying plate and the adjusting resonance plate to generate the bending deformation in a reciprocating manner; an insulation frame carried and stacked on the actuator element; and a conductive frame carried and stacked on the insulation frame, wherein the gas-injection plate is fixed on the four positioning protrusions of the gas-guiding-component loading region for supporting and positioning, so that the gas-injection plate and an inner edge of the gas-guiding-component loading region define a vacant space for the purified gas flowing therethrough, a flowing chamber is formed between the gas-injection plate and the bottom surface of the gas-guiding-component loading region, and a resonance chamber is formed between the actuator element, the chamber frame and the suspension plate, wherein when the actuator element is enabled to drive the gas-injection plate to move and generate a resonance effect, the suspension plate of the gas-injection plate is driven to generate the bending deformation in a reciprocating manner, the purified gas is inhaled through the vacant space, flows into the flowing chamber, and then discharges out, so as to complete gas transportation of the purified gas.
 10. The purification device of the baby carriage according to claim 1, wherein the airflow rate exported by the gas guider is at least 800 ft3/min.
 11. The purification device of the baby carriage according to claim 1, wherein the at least one outlet of the main body maintains a breathing distance from a breathing region of the baby in the baby carriage, and the breathing distance is ranged from 60 cm to 200 cm.
 12. The purification device of the baby carriage according to claim 1, further comprising an isolation cover, wherein the isolation cover covers the baby carriage and the baby in the baby carriage and comprises an opening, wherein the main body runs through and is fixed in the opening, the at least one inlet is located outside the isolation cover, and the at least one outlet is located inside the isolation cover.
 13. The purification device of the baby carriage according to claim 12, wherein the airflow rate exported by the gas guider is less than 800 ft3/min. 